B2 - Population Sampling Flashcards

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1
Q

What is a population?

A

The number of a specific species in a specific area at a specific time

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2
Q

What can population be influenced by?

A

Predators
War
Migration
Food Supply

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3
Q

What is a reason for monitoring the size of populations?

A

To identify endangered species

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4
Q

What is the piece of equipment used to measure a plant population?

A

A Quadrat

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5
Q

How can Quadrat experiments be conducted fairly?

A

By drawing out a graph using coordinates, these coordinates are then wrote out into a bowl which could then be chosen randomly to determine where the Quadrat is going to be thrown

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6
Q

How does using more Quadrats in an experiment make the test more accurate?

A

Because a larger is being analysed which means the result would be closer to that of the actual population

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7
Q

What is a Pooter used for?

A

Used for small insects to suck them up without the risk of harming or killing them

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8
Q

What is a Sweep Net used for?

A

Used to catch flying insects and aquatic organisms

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9
Q

What is a Pitfall trap used for?

A

Used to catch small ground insects in the ground

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